Every once in a while I read stories like this and my mind gets bogged down in the details and the implications of their findings and I actually forget that this data is coming from such an incredible distance away.

Promise me, Red. If you ever get out... find that spot. At the base of the crater, you'll find a rock that has no earthly business on Mars. Piece of black, volcanic glass. There's something buried under it I want you to have.

Erix:There are lots of kinds of volcanic rock, which reflect the source rock, along with the location, timing, and depth of formation. Also, we've been mostly targeting locations characterized by sedimentary rocks, since we're primarily concerned with what was happening at surface of Mars and how it relates to the potential for water and life.